Weather on May 15
Santa Rosa, CA
55 Years of Data
About This Date
May 15th in Santa Rosa, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 49°F — a 26°F daily swing. Over 56 years of records, the warmest May 15th was in 2008 (85°F average), while the coldest was 2011 (49°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 15th dates historically, with the wettest May 15th recording 1.85" of rain. The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for May 15th in Santa Rosa, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 82° | 42° | 62° | — | — |
| 2025 | 79° | 48° | 63° | — | — |
| 2024 | 73° | 50° | 62° | — | — |
| 2023 | 75° | 52° | 63° | — | — |
| 2022 | 83° | 52° | 67° | — | — |
| 2021 | 74° | 47° | 60° | — | — |
| 2020 | 77° | 51° | 64° | — | — |
| 2019 | 67° | 49° | 58° | 1.85" | — |
| 2018 | 68° | 51° | 60° | — | — |
| 2017 | 74° | 46° | 60° | — | — |
| 2016 | 77° | 51° | 64° | — | — |
| 2015 | 69° | 47° | 58° | — | — |
| 2014 | 88° | 54° | 71° | — | — |
| 2013 | 77° | 47° | 62° | — | — |
| 2012 | 67° | 48° | 57° | — | — |
| 2011coldest | 58° | 41° | 49° | 1.17" | — |
| 2010 | 69° | 48° | 59° | — | — |
| 2009 | 85° | 54° | 69° | — | — |
| 2008warmest | 100° | 70° | 85° | — | — |
| 2007 | 65° | 46° | 55° | — | — |
| 2006 | 86° | 60° | 73° | — | — |
| 2005 | 76° | 57° | 66° | — | — |
| 2004 | 81° | 47° | 64° | — | — |
| 2003 | 70° | 43° | 56° | — | — |
| 2002 | 74° | 47° | 60° | — | — |
| 2001 | 72° | 52° | 62° | — | — |
| 2000 | 63° | 48° | 55° | — | — |
| 1999 | 68° | 44° | 56° | — | — |
| 1998 | 65° | 46° | 55° | — | — |
| 1997 | 82° | 56° | 69° | — | — |
| 1996 | 65° | 58° | 61° | 1.65" | — |
| 1995 | 66° | 51° | 59° | — | — |
| 1994 | 76° | 51° | 63° | — | — |
| 1993 | 72° | 47° | 59° | — | — |
| 1992 | 65° | 50° | 57° | — | — |
| 1991 | 72° | 46° | 59° | — | — |
| 1990 | 72° | 46° | 59° | — | — |
| 1989 | 68° | 50° | 59° | — | — |
| 1988 | 76° | 49° | 62° | — | — |
| 1987 | 84° | 54° | 69° | — | — |
| 1986 | 74° | 49° | 61° | — | — |
| 1985 | 81° | 46° | 63° | — | — |
| 1984 | 68° | 47° | 57° | — | — |
| 1983 | 80° | 54° | 67° | — | — |
| 1982 | 76° | 44° | 60° | — | — |
| 1981 | 73° | 51° | 62° | — | — |
| 1980 | 73° | 42° | 58° | — | — |
| 1979 | 78° | 48° | 63° | — | — |
| 1978 | 80° | 45° | 62° | 0.2" | — |
| 1977 | 75° | 42° | 59° | — | — |
| 1976 | 92° | 46° | 69° | — | — |
| 1975 | 74° | 44° | 59° | — | — |
| 1974 | 73° | 44° | 59° | — | — |
| 1973 | 80° | 46° | 63° | — | — |
| 1972 | 87° | 46° | 67° | — | — |
| 1971 | 79° | 45° | 62° | — | — |
Santa Rosa, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Santa Rosa, CA Monthly Precipitation
Average rainfall per month, in inches.
Santa Rosa, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Santa Rosa, CA
Most pleasant months in Santa Rosa, CA: July.